Add a few small tweaks to mkimage-debootstrap, especially to help with lucid

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
move the contributing hook into hack, and use curl in the same way as the gofmt above

and remove the fmt-check one we don't document

tianon tells me they're called GitHub, not Github :)

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Add experimenta btrfs driver

This is an experimental btrfs driver. To use it you must have
/var/lib/docker mounted on a btrfs filesystem and explicitly
specify DOCKER_DRIVER=btrfs in the docker daemon environment.

It works by using subvolumes for the docker image/container layers.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Added new mkimage-yum.sh script to create CentOS base images

mkimage-rinse.sh requires rinse, which is not readily available on
CentOS or Fedora.  Plus, creating a base image is trivial with yum
alone.

Docker-DCO-1.1-Signed-off-by: Chris St. Pierre <chris.a.st.pierre@gmail.com> (github: stpierre)
fix shebang in mkimage-yum.sh

Docker-DCO-1.1-Signed-off-by: Chris St. Pierre <chris.a.st.pierre@gmail.com> (github: stpierre)
Refactor and fix register interface when bridge does not exist

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge branch 'fix-register-nobridge' of https://github.com/crosbymichael/docker into crosbymichael-fix-register-nobridge
Update tests to have custom routes

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
network: remove unnecessary links iptables rule for return traffic

Currently there are two iptables rules per port for each link: one to
allow the parent to connect to the child's port, and another one to
allow return traffic from the child back to the parent.  The second rule
shouldn't be needed because the "ctstate RELATED,ESTABLISHED" rule can
already allow all established traffic.

So this patch does the following:

1. Move the RELATED,ESTABLISHED rule to be _before_ the potential
   inter-container communication DROP rule so it will work for
   inter-container traffic as well.  Since we're inserting, everything
   is reversed chronologically so it should be inserted _after_ we
   insert the DROP.  This also has a small performance benefit because
   it will be processed earlier and it's generally one of the most
   commonly used rules.

2. Get rid of the unnecessary return traffic rule per link.

3. Also move the other "Accept all non-intercontainer outgoing packets"
   rule to earlier.  This gives a small performance benefit since it's
   also a commonly used rule, and it makes sense to logically group it
   next to the ctstate rule.

Docker-DCO-1.1-Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> (github: jpoimboe)
move image name into correct position

Docker-DCO-1.1-Signed-off-by: Aaron Feng <aaron.feng@gmail.com> (github: aaronfeng)
Use exec to replace bash with apache2 after environment is set up
Docker-DCO-1.1-Signed-off-by: Mike Naberezny <mike@naberezny.com> (github: mnaberez)
Update hack/make.sh with slightly clearer output and a more precise "are we in the Docker container?" check

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Add port allocator and move ipset into orderedintset

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Remove std sort and use custom sort for performances

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Refactor to support multiple ip addresses

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Simplify logic for registering ports

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Fix issues from rebase on master

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Improve test for container list `ps`

Docker-DCO-1.1-Signed-off-by: Fabio Falci <fabiofalci@gmail.com> (github: fabiofalci)
Clean up grammar on puppet.rst
Update puppet.rst